Draytek Vigor2860 series User Manual page 138

Available settings are explained as follows:
Item
QoS Type
PCR
SCR
MBS
PVC to PVC Binding
After finished the above settings, click OK to save the settings.
Vigor2860 Series User's Guide
Description
Select a proper QoS type for the channel according to the
information that your ISP provides.
It represents Peak Cell Rate. The default setting is "0".
It represents Sustainable Cell Rate. The value of SCR must
be smaller than PCR.
It represents Maximum Burst Size.
value is 10 to 50.
It allows the enabled PVC channel to use the same ADSL
connection settings of another PVC channel. Please choose
the PVC channel via the drop down list.
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The range of the